Worked great on my wordpress 4.1 install for my needs which is to display the warning only on the homepage.

There were a few minor concerns in the settings and behavior of the plugin though such as the opacity settings only allowed at 1.85 or 0.85 and, background image not displaying.

However i did not rate it lower for this as it can be solved with adding a bit of CSS:
.cwv3.dialog-overlay{
background-image: url("/wp-content/uploads/pinky.jpg");
background-repeat: no-repeat;
background-position: center top;
opacity: 0.98;
-moz-opacity: 0.98;
-webkit-opacity: 0.98;
}
The first 3 lines are for the background image, and the last 3 for the opacity.

Built and tested site, Content Warning worked flawlessly.
Upgraded WordPress, Upgraded Content Warning to 3.48.
Now Agree and Disagree buttons do nothing and you can not enter site so can not launch site.
Deactivated everything I absolutely do not need, deleted and reinstalled Content Warning, no joy.

Appears that when button is pressed it is reloading itself as opposed to doing enter or exit. Appears to be either Ecmascript corruption issue (Firefox and Chrome are related) or cookie issue or both.

This is not a general error but makes testing tough on a single machine if I can not test all browsers without rebooting between each. Environment is fully patched Windows 7 Home x64, latest builds of Firefox and Chrome.

Hello i have a question about this plugin was wondering is it SEO friendly by chance just wanted to see if search crawlers can still do there job either way i want to say Thanks for giving your time to keep this plugin going it is people like you that we need more of in this world